/Engine/Source/Runtime/Engine/Classes/GameFramework/PlayerController.h
Server/SP only function for changing whether the player is in cinematic mode. Updates values of various state variables, then replicates the call to the client to sync the current cinematic mode.
virtual void SetCinematicMode ( bool bInCinematicMode, bool bHidePlayer, bool bAffectsHUD, bool bAffectsMovement, bool bAffectsTurning )